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Spatial audio has been at the core of the multimodal experience at the AlloSphere, a unique instrument for data discovery and exploration through interactive immersive display, since its conception. The AlloSphere multichannel spatial audio design has direct roots in the history of electroacoustic spatial audio and is the result of previous activities in spatial audio at the University of California at Santa Barbara. A concise technical description of the AlloSphere, its architectural and acoustic features, its unique 3-D visual projection system, and the current 54.1 Meyer Sound audio infrastructure is presented, with details of the audio software architecture and the immersive sound capabilities it supports. As part of the process of realizing scientific and artistic projects for the AlloSphere, spatial audio research has been conducted, including the use of decorrelation of audio signals to supplement spatialization and tackling the thorny problem of interactive up-mixing through the Sound Element Spatializer and the Zirkonium Chords project. The latter uses the metaphor of geometric spatial chords as a high-level means of spatial up-mixing in performance. Other developments relating to spatial audio are presented, such as Ryan McGee's Spatial Modulation Synthesis, which simultaneously explores the synthesis of space and timbre.

Algotecton (from algorithm and tecton-carpentry, articulation) is a site-specific generative sculpture inspired by the Weaire-Phelan structure, a mathematical construct that approximates the geometry of foam. It comprises 16 interlocking polyhedra fabricated using advanced parametric modeling and computer numerical control (CNC) technologies. Evocative of different natural formations-a crystalline structure, a kelp forest, a molecular compound-the sculpture responds to Kendall Buster's Parabiosis II piece at the street level of the Washington Convention Center in Washington, D.C. Algotecton harnesses state-of-theart computational design and fabrication techniques to give material expression to mathematical concepts, invite discovery and playfully transform people's perception of space and form.Algotecton extends a tradition of mathematical and design research with roots in early studies in morphology, crystallography and molecular modeling. In D'Arcy Wentworth Thompson's pioneering exploration of form in the natural world, for example, morphology is understood as the expression of dynamic processes involving multiple intertwined biophysical forces that can be represented mathematically. The modeling of such structures has been the subject of mathematical and geometric investigations for centuries, playing a role in scientific understandings of the world at the atomic, Algotecton, prefabricated CNC-cut wood laminates, 2019. Renderings show the proposed installation at the Washington Convention Center, in conversation with Kendall Buster's Parabiosis II.